Graco THERM-O-FLOW 234239 User manual

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2003, Graco Inc. is registered to I.S. EN ISO 9001
309831 Rev.D
Instructions
THERM-O-FLOW®
Hot Melt Tank T5
For melting and pumping non flammable hot melt thermoplastic adhesives.
Model 234239
115 VAC
Model 234250
230 VAC
300 psi (2.0 MPa, 20.6 bar) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.

Manual Conventions
2309831D
Contents
Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Melt unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Front panel display . . . . . . . . . . . . . . . . . . . . . . . 7
Front panel display controls . . . . . . . . . . . . . . . . 8
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Mounting hot melt tank . . . . . . . . . . . . . . . . . . . . 9
Connecting hose . . . . . . . . . . . . . . . . . . . . . . . . . 9
Connecting applicator . . . . . . . . . . . . . . . . . . . . 10
Connecting timers and controllers . . . . . . . . . . 10
Installing auxiliary bypass connector 118262 . . 10
Adding material to tank . . . . . . . . . . . . . . . . . . . 11
Electrical wiring . . . . . . . . . . . . . . . . . . . . . . . . . 11
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Pressure relief procedure . . . . . . . . . . . . . . . . . 12
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Starting the hot melt system . . . . . . . . . . . . . . . 13
Adjusting panel controls . . . . . . . . . . . . . . . . . . 13
Dispensing material . . . . . . . . . . . . . . . . . . . . . 13
Adjusting timers and controllers . . . . . . . . . . . . 14
Daily Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 15
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Tools Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Replacing hose . . . . . . . . . . . . . . . . . . . . . . . . . 19
Replacing front panel . . . . . . . . . . . . . . . . . . . . . 20
Removing tank cover . . . . . . . . . . . . . . . . . . . . . 21
Replacing motor and capacitor . . . . . . . . . . . . . 21
Replacing pump . . . . . . . . . . . . . . . . . . . . . . . . . 22
Replacing pressure adjuster . . . . . . . . . . . . . . . 25
Replacing outlet fitting and thermistor assembly 27
Replacing tank heaters and switch assembly . . 28
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Housing assembly . . . . . . . . . . . . . . . . . . . . . . . 29
Motor and heat shield assembly . . . . . . . . . . . . 30
Insulation and base assembly . . . . . . . . . . . . . . 31
Pump to tank and pressure adjuster assembly . 32
Front assembly . . . . . . . . . . . . . . . . . . . . . . . . . 33
Pump assembly 118273 . . . . . . . . . . . . . . . . . . 34
Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 38
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 38
Manual Conventions
Note
WARNING
WARNING: a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
Warnings in the instructions usually include a symbol
indicating the hazard. Read the general Warnings
section for additional safety information.
CAUTION
CAUTION: a potentially hazardous situation which, if
not avoided, may result in property damage or
destruction of equipment.
Additional helpful information.

Warnings
309831D 3
Warnings
The following warnings include general safety information for this equipment. More specific warnings are included in
the text where applicable.
WARNING
ELECTRIC SHOCK HAZARD
Improper grounding, setup, or usage of the system can cause electric shock.
• Turn off and disconnect power cord before servicing equipment.
• Use only grounded electrical outlets.
• Use only 3-wire extension cords.
• Ensure ground prongs are intact on sprayer and extension cords.
PRESSURIZED EQUIPMENT HAZARD
Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and
cause serious injury.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings.
• Check equipment daily. Repair or replace worn or damaged parts immediately.
• Do not alter or modify equipment.
• For professional use only.
• Use equipment only for its intended purpose. Call your Graco distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Comply with all applicable safety regulations.
PRESSURIZED ALUMINUM PARTS HAZARD
Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids
containing such solvents in pressurized aluminum equipment. Such use can cause serious chemical
reaction and equipment rupture, and result in death, serious injury, and property damage.
BURN HAZARD
Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid severe
burns, do not touch hot fluid or equipment. Wait until equipment/fluid has cooled completely.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating
area of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic
fumes, burns, and hearing loss. This equipment includes but is not limited to:
• Protective eyewear
• Clothing and respirator as recommended by the fluid and solvent manufacturer
•Gloves
• Hearing protection

Installation
4309831D
Installation
THERM-O-FLOW®T5 Hot Melt System is used for melt-
ing and pumping hot melt thermoplastic adhesives. The
system consists of the melt unit, a heated supply hose,
and applicator. System operation is further enhanced by
the use of pattern controllers, timers, foot switches, or
other such devices. All temperatures in the hot melt sys-
tem are controlled by closed loop electronics using ther-
mistor-based sensors.
Melt unit
Includes heated melt tank with a motor-driven, positive
displacement gear pump. Front panel controls tempera-
tures and settings. Fluid pressure is supplied by the reg-
ulator that controls flow through a bypass mechanism.
Accessories
Install the following accessories in the order shown in
FIG. 1, using adapters as necessary.
Hoses
•Heated Hose (J): allow adhesive to flow from the
tank to the applicator while maintaining the set tem-
perature.
• Extrusion Hose: for extrusion application.
• Spray/Swirl Hose: includes air line in the hose
jacket.
Hose Part
No.
Extrusion,
Spray/Swirl
Application
Length 115/
230
VAC
117852 Extrusion 4 ft (1.2 m) 115
117853 Extrusion 6 ft (1.8 m) 115
117854 Extrusion 8 ft (2.4 m) 115
117855 Extrusion 10 ft (3 m) 115
117856 Extrusion 12 ft (3.6 m) 115
117857 Extrusion 16 ft (4.8 m) 115
117858 Extrusion 18 ft (5.4 m) 115
117859 Extrusion 24 ft (7.3 m) 115
117860 Extrusion 4 ft (1.2 m) 230
117861 Extrusion 6 ft (1.8 m) 230
117862 Extrusion 8 ft (2.4 m) 230
117863 Extrusion 10 ft (3 m) 230
117864 Extrusion 12 ft (3.6 m) 230
117865 Extrusion 16 ft (4.8 m) 230
117866 Extrusion 18 ft (5.4 m) 230
117867 Extrusion 20 ft (6 m) 230
117868 Extrusion 24 ft (7.3 m) 230
117872 Swirl/Spray 4 ft (1.2 m) 115
117873 Swirl/Spray 6 ft (1.8 m) 115
117874 Swirl/Spray 8 ft (2.4 m) 115
117875 Swirl/Spray 10 ft (3 m) 115
117876 Swirl/Spray 12 ft (3.6 m) 115
117877 Swirl/Spray 16 ft (4.8 m) 115
117878 Swirl/Spray 18 ft (5.4 m) 115
117879 Swirl/Spray 24 ft (7.3 m) 115
117880 Swirl/Spray 4 ft (1.2 m) 230
117881 Swirl/Spray 6 ft (1.8 m) 230
117882 Swirl/Spray 8 ft (2.4 m) 230
117883 Swirl/Spray 10 ft (3 m) 230
117884 Swirl/Spray 12 ft (3.6 m) 230
117885 Swirl/Spray 16 ft (4.8 m) 230
117886 Swirl/Spray 18 ft (5.4 m) 230
117887 Swirl/Spray 24 ft (7.3 m) 230

Installation
309831D 5
Applicators
•EG Electric Head (D): for automatic dispensing. No
air needed for application.Use with timer and pat-
tern controller.
•COM-PAK Pneumatic (H): for automatic dispens-
ing. Use with timer and pattern controller.
•AG Applicator (F): for automatic dispensing. Use
with timer and pattern contoller. Air-open, air-close
with spring-assist closing action.
•HG Handgun (G): for manual dispensing. Top or
bottom feed available. Control pump motor with reed
relay switch on the gun.
•Vertical Electric Applicator (VEA) (E): for manual
dispensing. One or two hand control options.
Timers and controllers
•EC-20 (B): 2- event pattern timer for automatic
application.
•EC-40 (B): 4-event pattern timer for automatic appli-
cation.
•Air Saver Control Unit (C): for spray or swirl pat-
tern applications. Adjusts and regulates air to the
applicator.

Installation
6309831D
Key:
A T5 Hot Melt Tank
B Timer (required for automatic application)
C Air Controller (required for airspray and swirl application)
D EG Applicator
E VEA Applicator
F AG Applicator
G Handgun Applicator
H Compak Applicator
J Fluid Hose
K Hose Electrical Connector
L Timer to Tank Power Cord
FIG. 1: Typical Installation
D
E
F
G
H
B
A
L
J
K
C

Installation
309831D 7
Front panel display
FIG. 2: Front Panel Display
Zone Heating
Indicators
Range Digit Range Select Pump Status Open Sensor Over Temperature
LED Pump Function
Switch Switch LED LED LED
Tank Temperature Control Hose Temperature Control Head Temperature Control

Installation
8309831D
Front panel display controls
Control Name Function
Tank Temperature
Control
Adjusts tank temperature within range number. See
Range Digit LED Chart, page 13.
Hose Temperature
Control
Adjusts hose temperature within range number. See
Range Digit LED Chart, page 13.
Head Temperature
Control
Adjusts applicator head temperature within range number.
See Range Digit LED Chart, page 13.
Zone Heating
Indicators
Indicates when appropriate control (Tank, Hose, or Head)
is at the selected temperature.
Flashing Amber: Warming up.
Flashing Green: Temperature has been reached.
Open Sensor LED Safety feature. Turns Yellow when open sensor condition
is detected. See Troubleshooting, page 16.
Over Temperature
LED
Flashes Red when over-temperature condition is
detected. The Zone Heating Indicator for the affected zone
flashes Red. Heating is disabled. See Troubleshooting,
page 16.
Pump Status LED Indicates pump status.
Red: pump function switch is OFF.
Green: pump is ON and enabled.
Range Select Switch Sets temperature range number for tank, hose, and appli-
cator.
Pump Function Switch Activates Pump:
OFF: pump is off.
CYCLE: pump will run when hand gun or foot pedal
is triggered.
RUN: pump is on.
Range Digit LED Displays temperature range per range number, see Range
LED chart 13.

Setup
309831D 9
Setup
Mounting hot melt tank
Bolt the hot melt tank securely to appropriate surface.
Bolt holes are provided on the base of the tank. Make
sure to mount tank where hose fittings are accessible
with wrenches.
Connecting hose
FIG. 3: T5 Connections and power supply
Key:
M Auxiliary Bypass Connection
NPowerCord
P Fluid Outlet
Q Pressure Adjuster
R On/Off Power Switch
S Hose Electrical Receptacle
QRSPMN
WARNING
To avoid accidental system pressurization or
electrical shock, disconnect power cord and turn
the ON/OFF switch to OFF.
WARNING
To prevent hose damage, do not flex hose when
cold. When hot, the hoses have a minimum bend
diameter 16 in. (40.64 cm)
115 VAC tanks can support up to 16ft. (7.32 m)
of total hose.
For hoses that are available, see hose chart on
page 4.

Setup
10 309831D
Connecting applicator
See hot melt tank applicator manual for specific instruc-
tion on how to install applicators to the hot melt tank.
• 310801 Manual Applicator manual
• 310803 Automatic Applicator manual
Connecting timers and
controllers
See EC-20/40 timer manual 310814 for instruction. See
appropriate gun manual for air saver control instructions.
Installing auxiliary bypass
connector 118262
(Included with assembly.)
When operating the hot melt unit with an extrusion
handgun, the Auxiliary Bypass Connector (M) should be
installed. The T5 will not function if nothing is plugged
into this port. See FIG. 3 page 9.
1. Connect hose (J) to fluid outlet fitting (P). Tighten
with 11/16 in (mm) opened end wrench.
To prevent leakage, make sure hose is seated
securely on outlet fitting.
To insure proper seating of threads, make sure out-
let threads are clean. See Troubleshooting, page
16.
R
K
J
S
P
2. Connect hose electrical connector (K) to tank hose
electrical receptacle (S). Make sure pins align prop-
erly.
3. Screw bayonet ring of the plug onto the receptacle.

Setup
309831D 11
Adding material to tank
Electrical wiring
The hot melt tanks use single phase, 100 to 130 VAC or
200 to 240 VAC, 50 to 60 Hz power sources, each with
earth ground for safety. The 115 VAC tanks come
equipped with a 15 amp molded plug for convenient
connection to a 115 VAC, 15 amp grounded receptacle.
The 230 VAC tanks come with three bare wire leads for
connection to an electrical circuit box or user-supplied
plug.
WARNING
This equipment is designed for use with standard
adhesive and sealant such as EVA’s, butyls, and
polyolefins with flash points above 450°F
(232°C). Not recommended for water curable or
solvent based adhesive. Do not use flammable
material or material not compatible with the spec-
ifications of this equipment. Failure to follow this
instruction can cause injury to operators and
damage to equipment.
1. Make sure melt tank has been flushed and cleaned.
See Flushing page 12.
If material to be added is compatible to existing
material in tank, flushing is not necessary.
2. Fill the melt tank with the amount of adhesive mate-
rial that will be used in one day. Material should not
be higher than 1.5 in. (4 cm) from the top of the
tank.
3. Follow the material manufacturer’s instructions for
operating temperature.

Operation
12 309831D
Operation
Pressure relief procedure
Flushing
WARNING
Follow Pressure relief procedure when you stop
spraying and before cleaning, checking, servicing, or
transporting equipment. Read warnings, page 3.
1. Shut off pump motor.
2. Actuate applicator, dispensing material into an
empty pail, until material stops dispensing through
the applicator.
WARNING
This equipment is designed for use with standard
adhesive and sealant such as EVA’s, butyls, and
polyolefins with flash points above 450°F
(232°C). Not recommended for water curable or
solvent based adhesive. Do not use flammable
material or material not compatible with the spec-
ifications of this equipment. Failure to follow this
instruction can cause injury to operators and
damage to equipment.
• Flush before changing materials.
• Flush at the lowest pressure possible. Check
connectors for leaks and tighten as necessary.
• Flush with purging compound 118090.
1. Make sure material in tank is completely dispensed.
2. Follow Pressure Relief Procedure, page 12.
3. Remove spray tip and soak in compound.
4. Pour compound into tank.
5. Start up the hot melt system. Follow instructions for
Starting the hot melt system, page 13; Adjusting
panel controls, page 13; and Dispensing mate-
rial, page 13.
6. Trigger the gun until clean compound dispenses.
7. Turn On/Off switch (R) OFF and unplug unit. See
FIG. 3 page 9.
8. Remove gun from hose. See gun manual to further
clean gun.

Operation
309831D 13
Starting the hot melt system
Adjusting panel controls
Refer to the material manufacturers specifications for
correct operating temperatures. The range number (1
through 7) that is selected applies to the hose, tank, and
applicator. Each control (i.e., hose, tank, and applicator)
can be adjusted to select the temperature range within
that range number.
Range Digit LED Chart
The Range Digit LED chart shows each range number
and its corresponding tank or hose and heated tempera-
ture range.
Dispensing material
1. Plug in hot melt system.
2. Turn On/Off switch (R) ON. See FIG. 3 page 9.
Range Tank Temperature
Hose and
Applicator
Temperature
1
115 to 160°F
46 to 71°C
125 to 170°F
52 to 77°C
2
155 to 205°F
68 to 96°C
165 to 215°F
74 to 102°C
3
195 to 250°F
91 to 121°C
205 to 260°F
96 to 127°C
4
235 to 295°F
113 to 146°C
245 to 305°F
118 to 152°C
5
270 to 340°F
132 to 171°C
285 to 350°F
141 to 177°C
6
305 to 380°F
152 to 193°C
320 to 385°F
160 to 196°C
7
325 to 395°F
163 to 202°C
340 to 410°F
171 to 210°C
1. Using the range select tool, adjust the range select
switch . Range number will appear in the
range digit LED .
2. Turn tank temperature control clockwise to
desired temperature setting.
For range number identification, see Range Digit
LED chart, page 13.
3. Turn hose temperature control clockwise to
desired temperature setting.
For range number identification, see Range Digit
LED chart, page 13.
4. Turn head control clockwise to desired temper-
ature setting.
For range number identification, see Range Digit
LED chart, page 13.
Pump status LED must flash green before pump
can operate.
1. When all three zone heating indicators are
flashing green, turn the pump function switch
to cycle.

Operation
14 309831D
Adjusting timers and controllers
See Timer manual 310814 for instruction. See Air Saver
Control instructions in appropriate applicator manual.
• 310801 Manual Applicator manual
• 310803 Automatic Applicator manual
2. Dispense the material as instructed in appropriate
applicator manual.
• 310801 Manual Applicator manual
• 310803 Automatic Applicator manual
3. To adjust flow of material, using a 10 mm hex
wrench, turn the pressure regulator (Q).
• To increase flow, turn regulator clockwise.
• To decrease flow, turn regulator counterclock-
wise.
Q
Increase flow
Decrease flow

Daily Maintenance
309831D 15
Daily Maintenance
Before powering up the hot melt system perform the fol-
lowing checks.
1. Inspect the melt tank for foreign materials and/or
charring of the adhesive. Wipe off all excess adhe-
sives from all surfaces with purging compound
118090.
2. Check the hoses, applicator heads, and nozzles for
wear and ensure integrity of all electrical connec-
tions.
3. Verify the hose is being properly supported so it is
not over-stressed during use. The minimum bend
diameter is 16 in. (42 cm) when hot.
4. Look for leaks under the melt unit and at all
mechanical connections.

Troubleshooting
16 309831D
Troubleshooting
Problem Cause Solution
Front panel not lit. Unit not plugged in or turned on. Plug in unit. Turn On/Off switch ON.
Wire harness connections not con-
nected or needs replacing. Fuse dis-
connected or needs replacing.
Check all power supply connections
to the front panel. Replace if neces-
sary, see Replacing front panel,
page 20. Check fuse with ohmmeter,
replace if necessary.
Open Sensor LED is activated Sensor condition is detected. Check hose and applicator electrical
connections. Make sure pins are
lined up correctly and are secure.
Check tank thermistor assembly with
ohmmeter, which should read
approximately 100,000 ohms at room
temperature. Replace if necessary,
see Replacing thermistor assem-
bly, page 27.
Check hose thermistor assembly with
ohmmeter. Replace hose. See
Replacing hose, page 19.
Check applicator thermistor assem-
bly. See appropriate applicator man-
ual.
Over Temperature Sensor LED is
activated and affected zone indicator
LED is activated.
Sensor condition is detected. If tank zone indicator is activated,
check tank heaters with ohmmeter. If
resistance is infinite, heater is bad.
Replace if necessary, see Replacing
tank heaters, page 28.
If hose zone indicator is activated,
check hose heater with ohmmeter. If
resistance is infinite, heater is bad.
Replace hose if necessary, see
Replacing hose, page 19.
If applicator zone indicator is acti-
vated, check applicator heater. See
appropriate gun manual.

Troubleshooting
309831D 17
Tank not heating or taking a long time
to heat and front panel is lit.
Temperature range not selected.
Power supply to the heaters not con-
nected correctly. One or both heaters
are damaged.
Check temperature range, see Front
panel display, page 7. Check fuse
and heaters with ohmmeter. Check
power supply to the heaters, see
Replacing front panel, page 20.
Replace heaters, see Replacing
heaters, page 28.
Hoses are not heating. Hose not plugged into correct con-
nector.
Properly connect hose, see Con-
necting hose, page 9.
Tank temperature too low. Wait for tank to heat up properly.
Hose will not heat completely until
tank reaches 65% of set temperature.
Improper voltage rating hose. A 230 VAC hose will connect to a 115
VAC receptacle. Make sure voltage
rating on hose matches the voltage
rating on the tank.
Pins not aligned correctly at hose to
tank connection.
Check connection for proper align-
ment of pins.
Check pins 13 and 14 with ohmme-
ter.
Power supply connections not con-
nected or needs replacing.
Check all power supply connections
to the front panel. Check fuses with
ohmmeter. Replace if necessary, see
Replacing front panel, page 20.
Hose is damaged Replace hose. See Replacing hose,
page 19.
Problem Cause Solution

Troubleshooting
18 309831D
Low or no flow of material from unit. No power to tank. Plug in unit. Turn On/Off switch ON.
Front panel settings not properly set. See Adjusting panel controls, page
13.
Not enough material in tank. Add material. Material should not be
higher than 1.5 in. (4 cm) from the top
of the tank. See Adding material to
tank, page 11.
Pressure adjuster is set too low. Adjust pressure adjuster, see Dis-
pensing material, page 13.
Auxiliary plug not plugged in. Plug in auxiliary connection or port
plug.
Set screw on pump/motor coupler is
loose.
Tighten set screw (32) on
pump/motor coupling.
Viscosity of material too high. Increase temperature settings. Refer-
ence material manufacturers instruc-
tion and follow Adjusting panel
controls, page 13.
Increase orifice size.
Gun nozzle plugged. Clean nozzle or replace. See appro-
priate applicator manual.
Hose is kinked or bent. Check for kinks in hose, replace if
damaged. See Replacing hose,
page 19.
Pump damaged. Replace pump, see Replacing
pump, page 22.
Material leaks from hose connection. Threads at hose connection not
seated properly.
Tighten connection. Clean threads by
heating or using purging compound
118090.
Applicator not heating. Front panel control not properly set. See Adjusting panel controls, page
13.
Tank has not yet reached set temper-
ature.
See Adjusting panel controls, page
13.
Applicator heater is damaged. See appropriate gun manual.
Applicator thermistor is damaged. See appropriate gun manual.
Problem Cause Solution

Repair
309831D 19
Repair
Tools Used
Replacing hose
For a list of hose part numbers, see hose chart on page
4.
• 11/16 in. wrench • 5/16 in. socket wrench • 1 in. wrench •Krytox
®lubricant
• 1/8 in. hex wrench • 7/16 in. wrench • 3/32 in. hex wrench • Penetrating lubricant
• 15/16 in. nut driver • 3/16 in. hex wrench • 5/8 in. wrench
• 5/16 in. wrench • 1 3/8 in. wrench • Phillips screw driver
1. Follow Pressure relief procedure, page 12.
2. Turn On/Off switch (R) OFF. Unplug tank unit.
3. Allow tank unit to cool before repairing.
4. Disconnect applicator from hose. See appropriate
applicator manual for instructions.
5. Remove bayonet ring from the electrical connector.
6. Pull electrical connector (K) from the tank hose
electrical receptacle (S).
7. Using an 11/16 in. wrench, remove hose (J) from
the fluid outlet fitting (P).
8. Replace hose. To reconnect hose, see Connecting
Hose, page 9.
S
R
K
P
J

Repair
20 309831D
Replacing front panel
1. Turn On/Off switch (R) OFF. Unplug tank unit.
2. From the front panel (2), using a 1/8 in. hex wrench,
remove screws (3).
2
3
3. Pull panel (2) away from tank and disconnect four
wire harness electrical connections and ground
cable. Front panel should now be disconnected
completely from tank.
4. Inspect front panel fuse 118320 attached to the
upper back of the front panel. Replace if necessary.
5. Inspect front panel 118191 and replace if neces-
sary. Repeat steps 2 and 3 in reverse order.